Granted Patent
Utility
US 4,352,622 · App. 06/219,446
Warehouse crane with pin-engageable tote pans
Inventor:
John E. Wieschel
Patented Case
View Patent ↗
Granted: Oct 5, 1982
Filed: Dec 23, 1980
Inventor
John E. Wieschel
Assignee (at issue)
Harnischfeger Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.